package com.wskj.shiro.chapter2.realm;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.realm.Realm;

public class MyRealm4 implements Realm {

	@Override
	public String getName() {
		// TODO Auto-generated method stub
		return "myRealm4";
	}

	@Override
	public boolean supports(AuthenticationToken token) {
		// TODO Auto-generated method stub
		return token instanceof UsernamePasswordToken;
	}

	@Override
	public AuthenticationInfo getAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
		// TODO Auto-generated method stub
		 String username = (String)token.getPrincipal();  //得到用户名
	        String password = new String((char[])token.getCredentials()); //得到密码
	        if(!"zhang".equals(username)) {
	            throw new UnknownAccountException(); //如果用户名错误
	        }
	        if(!"123".equals(password)) {
	            throw new IncorrectCredentialsException(); //如果密码错误
	        }
	        //如果身份认证验证成功，返回一个AuthenticationInfo实现；
	        return new SimpleAuthenticationInfo(username, password, getName());
		
	}

}
